The difference between estimated costs predicted for performing a first workscope and actual costs for performing the first workscope is determined. The model used to generate the estimated costs is adjusted to compensate for the difference, resulting in an improved model. Before beginning a second scope of work that is comparable to the first workscope, the improved model is used to predict estimated costs and a price for the second workscope. The estimated costs for the second workscope include predicted productivity gains. The price for the second workscope can be reduced relative to the price for the first workscope as a result of the improved model and the predicted productivity gains.